kneuper



G. M. KNEUPER.

APPARAT'S FOR MANUFACTURING FILTERS.

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N3 .tuen-a a I PATBNTED JULY 3, 1906.

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PATENTED JULY 3. 1906.

G. M. KNBUPER. APPARATUS FOR MANUFACTURING FILTERS.

APPLIUATIOI FILED HAY 18| 1906.

2 BHBBTS--BHEET 2.

le nw UNITED STATES rafrnnr OFFICE.

GEORGE M. KNEUPER, OF `NEW YORK, N. Y.

APPARATUS FOR MANUFACTURING FILTERS. i

Specification of Letters Patent.

resented .my c, 190e.

Original application le August 1i, 1904.. Serial No. 220,460. Divided and this application iisd lay 16,1905. Serial No. 280.676.

To ad?. wlw-m, tt may concern:

Beit known that I, GEORGE M. KNEUPER, a citizen of the United States, and a resident of the borough of ltianhattan, city, county, and State of New York, have invented cortuin new and useful Improvements in Apparatus for Manufacturing Filters, of which the following is a' specification.

M v invention relates to apparatus for the manufacture of filters, and has for its object to lrovide a rapid and inexpensive means oi ma ing efficient filters.

The invention will be fully described hereinafter and the features of novelty pointed out in the appended claims.

'lhe present application is a division of one filed by me in the United States Patent Office August 12, 1904, Serial No. 220,450.

Reference is to be had to the accompanying drawings, in which- Figure 1 is a sectional elevation of an apparatus for making filters according to my lnvcntion, showing said apparatus at the initial stage of the opera-tion. Fig. 2 is a similar view showing the ap ara-tus at the {ina-l stage of the operation. `ig. 3 is a sectional plan on line 3 3 of Fig. 1 Fig. 4 is a longitudinal sec-tion of form of filter made with the apparatus shown in Figs. 1= 2, and 3. Fig. 5 is a sectional elevation of another form of ilterqnaking apparatus constructed according to my invention. Fig. 6 is a sectional elevation of still another form of filtermaking apparatus embodying my invention, and Fig. 7 1s a sectional pien taken on line 7 'l' of Fig. (i.

In making my improved filter I employ a vessel having a perforated wall, so that the liquid may pass therethrough, and adjacent to this perforated wall l locate an expansible bod adapted to be forced toward said wall. If t 1e vessel is filled with pa )er-pulp susnendcd in water and if then the ox ansiblo ody isldistendcd or blown up quie ily, the Water will be forced through the perforated wall, but the pulp will remain compressed between the expo-lisible body and the perforated wall and will form a continuous shoot or lining against said wall. In detail the procedure may be as follows:

In Figs. 1, 2, and 3, A indicates the oporativc inner wall of the apparatus, which may he cylindrical and lucy consist ol perforated sheet metal or of wire-wetting. B is n. pouch 1ruulc of suitable porous or pervious material,

such as canton-flirtmoi. '.lho upper odge of this ouch is folded over the outer wall C, whic as shown, may consist of two oonnested wirescreensofc lindrical sha e. The outer wall C is secure to a bottom which may be slotted or perforated. This bottom D is preferably provided with lugs D', so that the entire receptacle may be conveniently set within e tank E or the like. Within the perforated Wall A is arranged an expansible ody F, for which pur ose I generally employa rubber bag. T is bag extends substantiall the entire length or height of the receptac e and is fastened at its top below a. cover G. This cover G may be provided with an o eninv for filling, which is closed by lu The said cover G is normally he d own against a flange A. at the to of the inner wall A by means of a nut H, W lich screws upon a perforated tube I, extending through the cover G and within the receptacle. To this tube I is secured the upper end of the bag F. The lower end of the tube may be free within the receptacle or, if preferred, the lower end of the tube may, as shown, be passed through the rubber bag' and through the bottom B, being secured there by a nut I. A llange C for strengthening is preferablyr located at the upper end of the outer wall.

In operation the above-described appara tus is placed in a tank, which is either empty or filled with water. Pulp suspended in water is poured into the central chamber J. Air is then blown into thc tubo I, so as to issue through the perforations thereof into the bag F. By the application of suit-able pressure the bag is quickly expanded against the inner wall A into substantially the form shown in Fig. 2. The water is quickly driven out through the perforated walls A andv C and tho pervious pouch B; but thc pulp is retained against thc inner surface of the inner wall A and fmms a continuous compressed lining thereon. The pressure will of course cause some of the pulp lining` to cuter into meshes of the wall A, and the said wall und its pulp lining will therefore be securely connected, so as to render them available for use ns one structure. If desired, however, thol lining may be so trat-cd from the wall 'A and used alone. After the lining is fol-mcd on the inner wall, us described, the recoptlwlc romoved from the tank. Tho compri-assed lining K producrui on the |m1foratod wall A coustltutes un cllicicnt iiltcr, either alone or togather, with said wall as a carryiug-framc.

IIO

This lltcr, Fig. 4, may be removed from thc apparatus by unseren-'ing nut l-I,- removing the cover G, grasping the flange A at the to i of thc inner wall and lifting the inner wall, together with the compressed-pulp lining K, from the receptacle. T his inner wall with the compressed lining thereon may then be used as a filter in any suitable a paratus. It will be seen that one face of the ining engages the perforated wall A; the other face being freely exposed, so that the lining is -perniitted to expand in one direction in case it should swell while in use: I consider it preferible when using thelilter to havethe iqu-id pass in through the exposedinner-surface of the lining and out through the meshes of the perforated wall. Another inner -Wall of' like construction is then put in the receptacle, and a filter-lining Vis formed thereon 1n the same manner as above described, and thus-the apparatus may housed-for roducing -a great number of iii-ters. itu-'il be understoodlthat after the rece tacle has been removed from the tank and iieforethe 4inner wall is removed thc rubber bag should be deilat-ed. It is not Vabsolutely necessary-to yuse the pouch B g but the use of saidpouch prevents the fibers from passing to and throu h the. outer wall C whenthe perforations of t e lm'erwall are beyonda certain size. Ant'easy sopa-ration of the inner wall A from the other parts of the apparatus is 'thusinsured ater the pulp) lining hasbeen made. The ouch B may o -dispensedwith if the mes es of the inner 'Wallare suicientlly'close. In any event., however, the top or cover G should be securely connected with the bottom D, so as to prevent. any leakage at the edges of'the in ner wall A.' A rubber gasket G1- may be applied to the cover, so as to engage the. flan' 1'e A'. In order to'prov-idc arecept-aelclorit e water expelled 'by the inflation of the bag F without making the tank E of unduly inicreased height, the latter may be made with a standpipe E', extending upwardly beyond thc cover G.

It will be obvious that -in the operation abovedoscribed an opening K will be produced at the bottom of-ltne filter-lining K.

(See Fig. 4.) ln cases where it is desired' to produce a. tilt-er having a. closed bottom 'the pipe Iwould terminate above the bottom Dz of the receptacle andwithin the bag F Fig. 5. In' this case tho cover (la could be reinoved,to gather with the pipe l and bag F', after the production of thc filter, and then the bottom of the lining would lie-:entirely closed by thc end portii'm. As in this case the )ipe l'L docs not extend through tl'iebottonrll, diil'crent means from those used in Figs. l, 3, and 3 must be. provided for holding down the cover G". For instance, scrow-rods L muy he hintcd to theI bottom l and {itt-od into slot tod cnrs G* nl the cover, tho tension being produced by moans of' winged nuts M.

In Figs. and 7 the inner wall a is formed .by rolling a sheet ol' wire-gauze or the like into cylindrical forni, so that there will be two 4or more layers at certain points, and this cylinder is then held in shape in any suitable manner, as by end rings a', L-shaped in crosssection and adapted to enga. re gaskets d' and gz,located,respectively, on t ie bottom d and cover g. The bottom d is shown intcvral with a cylindrical imperforato outer wall c, which wall may be provided with a standpipe e', corresponding in function to the stand-pipe E'. A plug g' normally closes an o suing in the cover through which the c 'mbar J may be filledJ with water in which pulp is suspended. An expansible body f is also contained in this chamber, said expansible body f being fitted on the pipe i, through which air or other suitable medium may be blown or forced into the bagf to expand the same.. Nuts h and i secure the parts of the apparatus together. The operation is cxactly the same as with the form of construction first described with the additional advantage that the: ulp lining may bo stripped much more readify from the erforated wall upon which it is ormed, so tuit such lining may be taken otl and applied to other car riers. By this const-motion the cleaning of the erforated wall is also much facilitated. Thi e I have described the. production of a compressed-pulp lining forming a filter on the inner surface of the inner wall, I desire it to be understood that my invent-ion is not restricted to this construction and operation, but that, generically speaking, lniay force an impervious surface(re )resented in this case by the rubber bag F J toward one face of a perforated Wall, (represented by the wall Aca-,l whether such wall be cylindrical or of any other shape and whether the surface exerting pressure be located on the inside of the said wall or elsewhere. In each case the impervious surface moving toward the perforated wall forces the liquid through said wall and compresses the pulp int-o a continuous laver on one surface ol" said wall.

In all the forms herein shown it obviously is'easy to substitute perforated walls A c. of different diameters for those shown in the drawings, so that the same ap mratus may housed for rnaking'lillors of ddlcrent sizes.

Instead of pulp I mayY employi-1 au)T other substance which is capable of being suspended in water or other liguid and is further capable of being separat. trom said liquid by forcing the l: uid through a perforated wall. If such substance is porous, the rcsultingr sheet or lining muy be used for lilterinlr purposes. A lining will be produced in allquvcnts which conforms to the shape oi the wall, so that. my invention, considerati broadly, provides means for moldinpr urticlos of' various kinds quickly und without rc quirinp,r the application of heut.

IOO

.substances suspended Various modifications may be made without departing from the nature of my invention.

I claim as my invention- 1. An apparatus for makingi articles from in liqui s, comprising a receptacle having an open-ended perforated inner wall A, an expansible ba F within said inner wall, a pervious pouc B sur rounding said inner wall and forming a bottom to the space embraced by said inner wall, a erforated o n-cnded outer Wall C surrou ing the b y of the ouch and a solid bottom D towhich the wa C isseoured.

2. An apparatus for making articles from substances suspended in liquids, comprising a perforated inner wall, an imperforate outer receptacle or tank, an expansible body located within theperforated wall, and a standpipe connected with the outer receptacle and extending above the top thereof to receive the surplus of liquid expelled by the expansion of the said body.

3. A n apparatus for makingi substances suspended in liqui articles from s, comprising two perforated walls nested one within the other, and one capable of sliding into and out of the other, a pervious pouch located between said walls and forming a means for the convenient removal of the inner wall, and an expansible body located within the inner Wall.

4. An apparatus for makin articles from substances suspended in liqui s, comprising a perforated wall, an imperforate outer receptacle or tank within which said erforated wall 1s located, an expansible body located on one side of said erforated wall, and a stand-pi e connect with the tank on the other si e of said perforated wall, and extending above the top of the tank to receive the excess of liquid expelled by the expansion of said body.

In testimony whereof I have hereunto set my hand in the presence of two subscribing wltnesses.

GEORGE M. KNEUPER. Witnesses:

JOHN LoTKA,

JOHN A. KEHLENBECK. 

